PDF MCM3264A Data sheet ( Hoja de datos )

Número de pieza	MCM3264A
Descripción	64K x 32 Bit Static Random Access Memory Module
Fabricantes	Motorola Semiconductors
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No Preview Available ! MOTOROLA • SEMICONDUCTOR TECHNICAL DATA 64K X 32 Bit Static Random Access Memory Module The MCM3264A is a 2M bit static random access memory module organized as 65,536 words of 32 bits. The module is a 64-lead zig-zag in-line module consisting of eight MCM6209C fast static RAMs packaged in a 28 J-Iead small outline package (SOJ) and mounted on a printed circuit board along with a decoupling capacitor for each FSRAM. The MCM6209C is a high-performance CMOS fast static RAM organized as 65,536 words of 4 bits, fabricated using high-performance silicon-gate CMOS technology. Static design eliminates the need for external clocks or timing strobes, while CMOS circuitry reduces power consumption and provides for greater reliability. The MCM3264A is equipped with output enable (<3) and four separate byte enable (E1-E4) inputs, allowing for greater system flexibility. The G input, when high, will force the outputs to high impedance. Ex high will do the same for byte x. PDO and PD1 are reserved for density expansion. PDO is open and PD1 is con- nected to ground internally on the module. These pins can be used to identify the density of the memory module. • Single 5 V ± 10% Power Supply • Fast Access Time: 15/20 ns • Equal Address and Chip Enable Access Time • Three State Outputs • Full TIL Compatible • JEDEC Standard Compatible • Power Operation: 1240/1160 mA Maximum, Active AC • High Board Density ZIP Module • Byte Operation: Four Separate Chip Enables, One for Each Byte (Eight Bits) • High Quality Four Layer FR4 PWB with Separate Internal Power and Ground Plane • Incorporates Motorola's State-of-the-Art Fast Static RAMs PIN NAMES AO-A15 ............. Address Inputs W ..................... Write Enable G ................... Output Enable E1 - E4 . . . . . . . . . . . . . .. Byte Enables 000 - 0031 ... . . .. Data Input/Output VCC ............. + 5 V Power Supply VSS ........................ Ground PD~ - POl ......... Package Density NC .................. No Connection All power supply and ground pins must be connected for proper operation of the device. MCM3264A PIN ASSIGNMENT 64-LEAD ZIG·ZAG IN·L1NE MODULE TOP VIEW - 871 A PD~ VSS DOO PDl DOl DOB D02 D09 D03 DOlO VCC DOll Al AO A2 A3 A5 A4 D04 D012 D05 D013 D06 D014 D07 D015 IN VSS A7 A6 E1 E2 E3 NC VSS DQ16 DQ17 DQ18 DQ19 A9 All A13 A14 DQ20 DQ2l DQ22 DQ23 VSS E4 NC G D024 D025 DQ26 D027 A8 Al0 A12 Vce A15 DQ28 DQ29 D030 DQ3l MOTOROLA FAST SRAM DATA MCM3264A 5-29 1 page A (ADDRESS) Q(DATAOUT) READ CYCLE 1 (See Note) ____~ 'AVAV -----------~*'_ I::;REVIOUSO:~~AL-ID--~=~X' XXX~""----D-A!-AV-AU-D---- tAVQV-------~~' NOTE: Device is continuously selected (E = VIL. G = VILl. READ CYCLE 2 (See Notes) _ _ _~ ~-----------tAVAV - - - - - - - - - - - - . l _ - - - A(ADDRESS) _ _ _ _-+-_ _ _""' 1"'t-----tELQV----~ EX (CHIP ENABLE) G(OUTPUT ENABLE) Q(DATAOUT) fICC ---------IEUeeH --- Vce SUPPLY CURRENT ISB DATAVAUD NOTES: 1. Addresses valid prior to or coincident with E going low. 2. All read cycle timing is referenced from the last valid address to the first transitioning address. MOTOROLA FAST SRAM DATA MCM3264A 5-33 5 Page

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